KEIRA & NATALIE

Knightley has the same doe-eyed ingenue good looks she shares with Portman to thank for scoring her one of her earliest acting roles: that of a double for Queen Amidala (played by Portman) in 1999's Star Wars: Episode 1 – The Phantom Menace.

SELENA & LUCY

The Pretty Little Liars star Hale was mistaken for Gomez last April, almost to disastrous results. "Someone was seriously convinced I was Selena Gomez today and tried to take my phone because they wanted to call justin beiber," she Tweeted.

AMY & ISLA

Not only is Fisher aware of her likeness to fellow redhead Adams, she's not above using it to her advantage. "If [Confessions of a Shopaholic"] is a hit, it was Isla Fisher in the movie," she joked prior to the release of the 2009 rom-com. "And if it doesn't work out, it was Amy Adams."

LEA & IDINA

When Glee producers were looking to cast Michele's onscreen mom, they quickly landed on fellow Broadway veteran Menzel, who shares the starlet's dark hair and pouty lips. But while a fan campaign brought the resemblance to light, Menzel's husband Taye Diggs said, "We knew that existed far, far before the TV world did."

CHELSEA & ELIZABETH

Repeated run-ins with fans mistaking her for the comedian led Banks to make an appearance on Handler's late-night show and share an anecdote about their mistaken identity. "[A fan's] like 'I just love your books; My Horizontal Life,' and I was like, 'Oh, he thinks he's meeting Chelsea Handler,'" Banks said. "And I couldn't ruin it for him, you know. I was like 'yeah it's nice to meet you.'"

NINA & VICTORIA

Their similar hairstyles and heart-shaped faces have confused fans as to who's who, something the Victorious star has discovered first-hand. "I get this every single day. Everyone always confuses me for her," Justice told MTV, but added there's no hard feelings about the mix-up. "It's such a compliment because I think she's so gorgeous and she's so sweet."

ROSELYN & NICOLE

Both standing at 5 ft., 5 in., the lead singer of the Pussycat Dolls and the former star of Without a Trace also share similar dark eyes and hair and olive skin tone – no wonder the two could easily be mistaken for the other in Hollywood.

MINKA & LEIGHTON

The uncanny resemblance between the brunette beauties is what helped Meester and Kelly star as friends-turned-foes in 2010's Single White Female remake The Roommate, in which Meester's character attempts to make herself over in Kelly's character's likeness.

JEWEL & RENéE

When Jewel first entered the music scene, her golden waves and country twang drew comparisons to the star of Jerry Maguire – but not always for the right reasons. "My feelings were so hurt by that story," she told Shape of being dubbed the "chubby Renée Zellweger" early in her career.